choiceselect(event: BalloonSelectEvent) {
    event.args.pop(); // FIXME: cuttlebone Balloon.jsがargsを1つ多く付けるバグの暫定回避 https://github.com/Ikagaka/Balloon.js/pull/14
    const shiorif = this.kernel.component(Shiorif);
    if (/^On/.test(event.id)) { // On
      shiorif.get3(event.id, event.args).then(this.kernel.executeSakuraScript);